ITV-S

In-Tank Valve

Función y Descripción

In-Tank Valves such as the PROTEGO® ITV-S are used in storage tanks for cryogenic liquids in order to seal off discharge lines in the event of an accident or emergency. These devices comply with the requirements of API 625.

PROTEGO® ITV-S consists of a valve guide unit and valve
seat which is mounted (flanged) on the inner tank wall via an
elbow. When the unit actuates, the valve piston is lifted up and
guided over the entire lift stroke. The seal between the valve
seat and the valve disk is achieved by finely lapping both surfaces
to achieve maximum tightness.

The actuating unit, installed on the tank roof, is specifi cally designed to the requirements of the application in order to actuate the valve pallet assembly by using suitable ropes or similar connecting elements.

During normal operation, the valves are kept in the open position.
In case of emergency, the bottom assembly will rapidly
close. This is achieved by interrupting the energy supply to the
actuating unit, which will cause the valve piston to fall on the
valve seat using the deadweight of the valve pallet (fail safe concept).

The design of the PROTEGO® ITV-S provides the tank designer the following benefits:

Very light and compact design

Connection through the tank wall via fl ange connection

No support or stroke guide required in the tank

Low actuating forces required for lifting the valve piston

Extremely high valve seat tightness thanks to a lapped metal
to metal seal